Loving your job makes you better at it, but the purpose of your job is to have the ability to furnish your life with the things/experiences that make you feel like you're leading a fulfilled and happy life. If a person has a list of those things, enough of them, and a best life ethos then work becomes less important and more of a means to an end rather than life itself. Seems you're on the right track.

As for people prioritising their job over their children and family? Well, I don't want to judge but words like, idiots, and bad parents, come to mind.